Matter

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Across
  1. 3. sort things in different groups
  2. 4. how much space an object takes up
  3. 7. anything that has a fixed shape and volume
Down
  1. 1. doesn’t have a fixed volume or shape
  2. 2. anything that takes up space and has mass
  3. 5. has a fixed volume, but not a fixed shape
  4. 6. weight of an object